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Finding the Fourth Proportional to 17,993, 27,003.42 and 12,485

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Solution

The fourth proportional to 17,993, 27,003.42 and 12,485 is: 18,737.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,993 : 27,003.42 = 12,485 : x
  2. Step 2: Convert to fraction form
    17,993/27,003.42 = 12,485/x
  3. Step 3: Cross multiply
    17,993x = 27,003.42 × 12,485
  4. Step 4: Simplify right side
    17,993x = 337,137,698.70
  5. Step 5: Solve for x
    x = 337,137,698.70/17,993
  6. Step 6: Final answer
    x = 18,737.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.